Light tower



FIG. 1 is a top perspective view of a light tower embodying my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof.

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The portions shown in broken lines on FIG. 2 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a light tower, as shown and described. 